ATP Washington 08/03 19:30 24 [81] Steve Johnson v Ramkumar Ramanathan [204] 6-3,7-6
ATP Atlanta 07/28 17:30 26 [42] Taylor Fritz v Steve Johnson [80] 6-7,6-4,6-1
ATP Atlanta 07/26 20:20 25 [73] Alexei Popyrin v Steve Johnson [80] 6-7,3-6
ATP Los Cabos 07/23 00:40 27 [37] Taylor Fritz v Steve Johnson [83] 6-4,6-4
ATP Los Cabos 07/22 01:20 26 [119] Yasutaka Uchiyama v Steve Johnson [83] 6-7,3-6
ATP Los Cabos 07/20 01:55 25 Gerardo L Villasenor v Steve Johnson 6-7,2-6
ATP Newport 07/12 17:45 25 [83] Steve Johnson v Denis Kudla [104] 6-7,6-3,4-6
Wimbledon 07/01 13:45 24 [40] Taylor Fritz v Steve Johnson [74] 6-4,7-6,4-6,6-7,6-4
Wimbledon 06/30 15:30 23 [74] Steve Johnson v Dennis Novak [122] 7-6,6-2,7-5
French Open 06/04 13:30 25 [88] Steve Johnson v Pablo Carreno-Busta [12] 4-6,4-6,2-6
French Open 06/02 16:50 24 [80] Thiago Monteiro v Steve Johnson [88] 3-6,7-6,6-7,6-3,3-6
French Open 05/31 09:00 23 [88] Steve Johnson v Frances Tiafoe [74] 6-7,3-6,6-4,6-2,6-1
ATP Parma 05/25 15:15 25 [86] Steve Johnson v Jiri Vesely [71] 6-7,2-6
Challenger Oeiras 05/18 12:30 25 [182] Emilio Gomez v Steve Johnson [83] 7-6,3-6,6-3
Challenger Orlando 04/13 19:00 25 [85] Steve Johnson v Christopher Eubanks [233] 1-6,6-7
ATP Miami 03/24 18:20 23 [82] Steve Johnson v Yannick Hanfmann [108] 5-7,2-6
ATP Acapulco 03/16 02:50 25 [82] Steve Johnson v Laslo Djere [54] 2-6,3-6
ATP Cologne 2 10/21 12:00 26 [71] Steve Johnson v Alejandro Davidovich Fokina [64] 6-7,3-6
ATP Cologne 2 10/20 09:00 - Felix Auger Aliassime v Steve Johnson View
ATP Cologne 2 10/19 17:20 25 [40] Marin Cilic v Steve Johnson [68] 6-7,4-6
ATP Cologne 10/14 17:55 26 [92] Lloyd Harris v Steve Johnson [68] 7-6,7-6
ATP Cologne 10/12 16:20 25 [68] Steve Johnson v Filip Krajinovic [30] 3-6,6-4,6-4
French Open 09/29 14:40 23 [64] Steve Johnson v Roberto Carballes Baena [101] 1-6,1-6,0-6
US Open 09/02 21:55 24 [65] Ricardas Berankis v Steve Johnson [64] 7-5,6-2,1-6,7-6
US Open 08/31 22:30 23 [64] Steve Johnson v John Isner [22] 6-7,6-3,6-7,6-3,7-6
ATP New York 08/20 16:10 44 [63] Steve Johnson v Pedro Martinez [106] 3-6,7-6,2-6
All American Team Cup 07/05 22:30 - [63] Steve Johnson v Tommy Paul [57] 7-6,6-4
All American Team Cup 07/04 23:35 - [63] Steve Johnson v Taylor Fritz [24] 2-6,7-5,10-8
All American Team Cup 07/03 23:30 - [63] Steve Johnson v Reilly Opelka [39] 6-4,4-6,10-5
Altec Styslinger Tennis Exhibition 07/01 16:30 - [276] JC Aragone v Steve Johnson [63] 4-2,4-1

Steve Johnson Jr The Third. (born December 24, 1989) is an American former professional tennis player.

He had a career-high singles ranking of world No. 21 achieved on July 25, 2016, and a doubles ranking of world No. 39 achieved on May 23, 2016. For one week in August 2016, Johnson was the top-ranked American in men's singles. He won four ATP Tour and nine ATP Challenger Tour titles, one at Nottingham on grass, twice at Houston on clay, and one at Newport on grass. He won a bronze medal in men's doubles at the 2016 Olympics with fellow American Jack Sock.

Johnson played college tennis for the USC Trojans. He won the NCAA Men's Singles Championship in his junior and senior seasons (2011–2012), and he was a part of a Trojan team that won four consecutive NCAA Championships.